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[RFC,v3,3/6] V4L: Add v4l2_event_subdev_unsubscribe() helper function

Message ID 1358979721-17473-4-git-send-email-sylvester.nawrocki@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sylwester Nawrocki Jan. 23, 2013, 10:21 p.m. UTC 
Add a v4l2 core helper function that can be used as the subdev
.unsubscribe_event handler. This allows to eliminate some
boilerplate from drivers that are only handling the control events.

Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
---
 drivers/media/v4l2-core/v4l2-event.c |    7 +++++++
 include/media/v4l2-event.h           |    4 +++-
 2 files changed, 10 insertions(+), 1 deletions(-)
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Patch

diff --git a/drivers/media/v4l2-core/v4l2-event.c b/drivers/media/v4l2-core/v4l2-event.c
index c720092..86dcb54 100644
--- a/drivers/media/v4l2-core/v4l2-event.c
+++ b/drivers/media/v4l2-core/v4l2-event.c
@@ -311,3 +311,10 @@  int v4l2_event_unsubscribe(struct v4l2_fh *fh,
 	return 0;
 }
 EXPORT_SYMBOL_GPL(v4l2_event_unsubscribe);
+
+int v4l2_event_subdev_unsubscribe(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+				  struct v4l2_event_subscription *sub)
+{
+	return v4l2_event_unsubscribe(fh, sub);
+}
+EXPORT_SYMBOL_GPL(v4l2_event_subdev_unsubscribe);
diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h
index eff85f9..be05d01 100644
--- a/include/media/v4l2-event.h
+++ b/include/media/v4l2-event.h
@@ -64,6 +64,7 @@ 
  */
 
 struct v4l2_fh;
+struct v4l2_subdev;
 struct v4l2_subscribed_event;
 struct video_device;
 
@@ -129,5 +130,6 @@  int v4l2_event_subscribe(struct v4l2_fh *fh,
 int v4l2_event_unsubscribe(struct v4l2_fh *fh,
 			   const struct v4l2_event_subscription *sub);
 void v4l2_event_unsubscribe_all(struct v4l2_fh *fh);
-
+int v4l2_event_subdev_unsubscribe(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+				  struct v4l2_event_subscription *sub);
 #endif /* V4L2_EVENT_H */